Windows apps · Simon Tatham
PuTTY CAC security updates
The latest version of PuTTY CAC is 0.85.2.0, released September 30, 2026. Patch Radar has 2 security fixes for PuTTY CAC, closing 4 CVEs. The newest security fix is PuTTY CAC 0.84.0.0, released May 25, 2026. Version 0.85.2.0 adds no new CVE fixes and includes all of them.
Latest version
0.85.2.0
Released Sep 30, 2026
Security fixes
2
On record in Patch Radar
CVEs
4
Closed by those fixes
Exploited
0
Vendor report or CISA KEV
Security fixes, newest first
| Priority | Fix | Fixed in | CVEs | Exploited | Released |
|---|---|---|---|---|---|
| Latest | PuTTY CAC 0.85.2.0 | 0.85.2.0 | Includes every fix below | Sep 30, 2026 | |
| Routine | PuTTY CAC 0.84.0.0 | 0.84.0.0 | 3 | May 25, 2026 | |
| Routine | PuTTY CAC 0.81.0.0 | 0.81.0.0 | 1 | Apr 15, 2024 | |
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